Sciumè, C., et al. “OPERATIVE ENDOSCOPY AND LAPAROSCOPICSURGERY ASSOCIATION IN THE TREATMENT OFCHOLECYSTO-CHOLEDOCHOLITHIASIS Docica”. Annali Italiani Di Chirurgia, vol. 73, no. 3, May 2002, pp. 281-6, https://annaliitalianidichirurgia.it/index.php/aic/article/view/709.